. The biology of the protozoa. Protozoa; Protozoa. 444 BIOLOGY OF THE PROTOZOA division. Each individual or aggregate of individuals may encyst to form permanent spore-like resting stages. Flagellated spores are unknown (see Valkanov, 1929). Family 2. Zobsporidae Zopf-Delage.— These forms are also endo- parasitic in diatoms, algae and various Protozoa, and have filose, Heliozoa-like pseudopodia without axial filaments. They are dis- tinguished by the formation of swarm spores. Protomonas amyli Cienkowsky apparently lives only on starch grains. Typical genera: Pseudospora Cienkowsky, Protomonas
. The biology of the protozoa. Protozoa; Protozoa. 444 BIOLOGY OF THE PROTOZOA division. Each individual or aggregate of individuals may encyst to form permanent spore-like resting stages. Flagellated spores are unknown (see Valkanov, 1929). Family 2. Zobsporidae Zopf-Delage.— These forms are also endo- parasitic in diatoms, algae and various Protozoa, and have filose, Heliozoa-like pseudopodia without axial filaments. They are dis- tinguished by the formation of swarm spores. Protomonas amyli Cienkowsky apparently lives only on starch grains. Typical genera: Pseudospora Cienkowsky, Protomonas Cienkowsky and Protomyxa Fig. 183.—Nuclcaria delicatula, quiescent and moving forms. (From Calkins.) Family 3. Vampyrellidae Doflein.—Here also the pseudopodia are very delicate and frequently branch and anastomose and may proceed from all sides of the body or be limited in origin to certain regions. They are frequently parasitic on algae and Protozoa, some forms having the ability to dissolve the cellulose membranes of plant cells, thus making holes through which the protoplast passes into the body of the parasite (e. g., Vampyrella; see Lloyd, 1929) or they may enter the plant cells. Products of chlorophyll nutrition frequently form reddish-colored masses (karotin) in their proto-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Calkins, Gary N. (Gary Nathan), b. 1869. Philadelphia, Lea & Febiger
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